312289013 has 2 divisors, whose sum is σ = 312289014. Its totient is φ = 312289012.

The previous prime is 312289007. The next prime is 312289037. The reversal of 312289013 is 310982213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 270207844 + 42081169 = 16438^2 + 6487^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312289013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312289513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156144506 + 156144507.

It is an arithmetic number, because the mean of its divisors is an integer number (156144507).

Almost surely, 2^312289013 is an apocalyptic number.

It is an amenable number.

312289013 is a deficient number, since it is larger than the sum of its proper divisors (1).

312289013 is an equidigital number, since it uses as much as digits as its factorization.

312289013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 312289013 is about 17671.7009085147. The cubic root of 312289013 is about 678.4516479441.

The spelling of 312289013 in words is "three hundred twelve million, two hundred eighty-nine thousand, thirteen".